Computer network security: PT vs. VA
The security of computer networks is of vital importance for a company. With technologies increasingly relying on remote services, it is good to ensure that security is guaranteed. To do this, two tools are used: Vulnerability Assessment and Penetration Test. But what is the difference between them? The answer to this question is not as obvious as one might think.
The short answer is: a Pentest (PT) may be a form of vulnerability assessment (VA), but a vulnerability assessment is definitely not a Pentest. Let’s try to better understand how they work and their purposes.
Verification of the security of computer networks: Vulnerability Assessment
A vulnerability assessment is the process of running automated tools against defined IP addresses to identify vulnerabilities in the environment in which one operates. Vulnerabilities typically include unprotected or misconfigured systems. The tools used to perform vulnerability scans are specific software that automates the process. Obviously these software are practically useless without an operator who knows how to use them correctly.
These tools provide an easy way to scan for vulnerabilities and there are both open source and proprietary ones. The main advantage of the open-source ones is that, with great probability, they are the same ones used by hackers, they are unlikely to pay an expensive subscription, when they can download open source applications for free.
In practice, a VA allows you to:
identify and classify security holes in the computer network
understand the cyber threats to which the company is exposed
recommend corrective measures to eliminate the weaknesses found
The purpose of a Vulnerability Assessment is to identify known vulnerabilities so that they can be corrected. Scans are typically done at least quarterly, although many experts recommend monthly scans.
How to perform a VA
Il processo di esecuzione si divide in due fasi e non prevede lo sfruttamento delle debolezze riscontrate. Questo ulteriore passaggio e’ invece previsto nel Penetration Test.
- Fase 1: prima analisi
- durante questa fase vengono raccolte tutte le informazioni disponibili sull’obiettivo per determinare quali potrebbero essere i punti deboli e le falle nel sistema di sicurezza delle reti informatiche
- Fase 2: seconda analisi
- in questa fase, tramite l’uso delle informazioni ricavate, vengono messe alla prova i possibili problemi. In questa fase le vulnerabilita’ sono testate per capire se siano effettivi problemi come supposto precedentemente.
Data l’incredibile velocita’ in cui le tecnologie e le tecniche informatiche si evolvono, e’ possibile che un sistema si mostri sicuro questo mese, ma abbia invece delle criticita’ da risolvere il mese successivo. Per questo e’ consigliato ripetere regolarmente e con frequenza i controlli di sicurezza sulle reti informatiche aziendali.
The execution process is divided into two phases and does not involve exploiting the weaknesses found. This further step is instead foreseen in the Penetration Test.
Phase 1: first analysis
during this phase, all the information available on the objective is collected to determine what could be the weak points and gaps in the security system of computer networks
Phase 2: second analysis
in this phase, through the use of the information obtained, possible problems are put to the test. In this phase the vulnerabilities are tested to understand if they are actual problems as previously assumed.
Given the incredible speed at which computer technologies and techniques evolve, it is possible that a system will prove secure this month, but instead have some problems to solve the following month. For this reason, it is advisable to repeat the security checks on company computer networks regularly and frequently.
At the end of the process of verifying the vulnerabilities of a system, the final reports contain all the results collected. Typically these enclose all relevant information, including:
the list of vulnerabilities found
an in-depth description of the vulnerabilities
countermeasures to be adopted to reduce risks
Verification of vulnerabilities is a fundamental procedure for the company, but it does not guarantee the security of computer networks. For the correct maintenance of the security of your systems, it is also essential to use another tool: the Penetration Test.
The Pentest, or penetration test, is aimed at verifying how the vulnerabilities of a system can be exploited to gain access and move within it. One of the initial steps performed by a pentester is scanning the network to find IP addresses, device type, operating systems and possible system vulnerabilities. But unlike the Vulnerability Assessment, the Pentest doesn’t stop there.
Of crucial importance for a tester is the exploit of identified vulnerabilities in order to gain control of the network or to take possession of sensitive data. The tester uses configurable automated tools to perform exploits against computer network systems. The peculiar part, however, occurs when the tester performs manual exploit attempts, just like a hacker would.
Penetration tests are classified in two ways: gray box or black box.
Gray box tests are performed with full knowledge of the target company’s IT department. Information is shared with the tester, such as network diagrams, IP addresses, and system configurations. The approach of this method is the verification of the safety of the present technology.
A black box test, on the other hand, represents more properly the action of a hacker who tries to gain unauthorized access to a system. The IT department knows nothing about the test being performed and the tester is not provided with information about the target environment. The black box method evaluates both the underlying technology and the people and processes involved to identify and block an attack as it would happen in the real world.
Phases of the Pentest
Phase 1: Analysis
The system is analyzed, studying its strengths and weaknesses. All preliminary information is collected. This, of course, does not happen if it is a gray box pentest.
Phase 2: Scan
The entire infrastructure is scanned to find the weak points to focus on.
Phase 3: Planning
Thanks to the information gathered, we plan with which tools and techniques to use to hit the system. The possibilities are many and they are both purely technological and social engineering techniques.
Phase 4: actual attack
In this phase the testers try to exploit the identified vulnerabilities to gain full control of the targeted system.
At the end of the Penetration Test, a report is also compiled that details the entire process carried out and includes:
evaluation of the impact of a real attack on the company
solutions to solve problems and secure computer network systems
A Penetration Test that is not successful is a sign that the system under examination is safe * and the data inside it does not risk anything. However, this does not mean that the company will be protected forever from any attack: precisely because the strategies of hackers constantly evolve, it is important to carry out Penetration Tests regularly.
(*) It should be noted, however, that although a good Penetration Test follows guidelines or structuring methodologies (i.e. OWASP) it remains a test with a strong subjective impact of the Penetration Tester and of the team that performed it, therefore it cannot be excluded that by repeating the tests carried out by a different group of Penetration Tester we have no new results. Furthermore, as is well known to our readers, in the field of Cyber Security the concept of “safe” in absolute terms is inadequate.
How to do
Although Vulnerability Assessments and Penetration Tests have different objectives, both should be performed regularly to verify the overall security of the information system.
Vulnerability assessment should be done often to identify and fix known vulnerabilities. The Pentest should be carried out at least once a year and certainly after significant changes in the IT environment, to identify possible exploitable vulnerabilities that may allow unauthorized access to the system. Both of the services described in this article are available through SOD, even on a recursive basis to ensure test effectiveness. contact us to find out more.
- What is it for? Hadoop Security Data Lake (SDL)
- Secure Online Desktop achieves ISO 27001: the security certification for managed services
- SOCaaS and Active Defense Deception Webinar – Guide to the next cybersecurity online event
- Auditing IT della sicurezza: guida completa all’analisi proattiva di vulnerabilità e conformità
- CIS Controls and Vulnerability Assessment: practical guide to adopting best practices
- Kerberoasting: a threat to cybersecurity and how to mitigate it with Security Posture analysis
- Protect Your Business: Antivirus vs. SOC Service with EDR and Next Generation Antivirus (NGA)
- CSIRT and SOC: Differences between incident management and security monitoring
- Backup as a Service (17)
- Cloud Conference (3)
- Cloud CRM (1)
- Cloud Server/VPS (22)
- Conferenza Cloud (4)
- ICT Monitoring (5)
- Log Management (2)
- News (23)
- ownCloud (4)
- Privacy (7)
- Secure Online Desktop (14)
- Security (191)
- Web Hosting (15)
- ALPHV/BlackCat Takedown Appears to Be Law Enforcement Related December 9, 2023Threat intel sources confirm the ransomware group's site has been shuttered by law enforcement.
- Apple: 2.5B Records Exposed, Marking Staggering Surge in Data Breaches December 8, 2023Data breaches are rapidly accelerating, according to a number-crunching report from Apple this week — heightening the need to finally implement end-to-end data encryption.
- Making Cyber Insurance Available for Small Biz, Contractors December 8, 2023Cyber insurance companies are moving down-market to offer policies to help protect remote employees, independent contractors, and small businesses from the cost of cyberattacks.
- Increased Cyber Regulation in the Offing as Attacks Mount December 8, 2023Cybersecurity could be heading for a Sarbanes Oxley-type of regulation in light of escalating attacks, but the devil is in the details.
- Russian Espionage Group Hammers Zero-Click Microsoft Outlook Bug December 8, 2023State-sponsored actors continue to exploit CVE-2023-23397, a dangerous no-interaction vulnerability in Microsoft's Outlook email client that was patched in March, in a widespread global campaign.
- Municipalities Face a Constant Battle as Ransomware Snowballs December 8, 2023As record-breaking volumes of ransomware hit cities, towns, and counties this year, municipalities remain easy targets that pay, and there's no end of the attacks in sight.
- Kenyan Digital Identity System Shelved Over Data Protection Concerns December 8, 2023Privacy concerns see the proposed digital identity system paused until February.
- The 3 Most Prevalent Cyber Threats of the Holidays December 8, 2023Chaos and volume of holiday season sales make a perfect storm of threat opportunity. Companies need to prepare — and practice! — action plans, identify key stakeholders, and consider cyber insurance.
- Human-Centric Security Model Meets People Where They Are December 7, 2023Instead of fighting workarounds that compromise security, a human-centered system fixes the process issues that prompt people to work dangerously.
- CISOs See Software Supply Chain Security As Bigger Blind Spot Than GenAI: Cycode December 7, 2023
- SEC Consult SA-20231123 :: Uninstall Key Caching in Fortra Digital Guardian Agent Uninstaller November 27, 2023Posted by SEC Consult Vulnerability Lab, Research via Fulldisclosure on Nov 27SEC Consult Vulnerability Lab Security Advisory < 20231123-0 > ======================================================================= title: Uninstall Key Caching product: Fortra Digital Guardian Agent Uninstaller (Data Loss Prevention) vulnerable version: Agent:
- SEC Consult SA-20231122 :: Multiple Vulnerabilities in m-privacy TightGate-Pro November 27, 2023Posted by SEC Consult Vulnerability Lab, Research via Fulldisclosure on Nov 27SEC Consult Vulnerability Lab Security Advisory < 20231122-0 > ======================================================================= title: Multiple Vulnerabilities product: m-privacy TightGate-Pro vulnerable version: Rolling Release, servers with the following package versions are vulnerable: tightgatevnc < 4.1.2~1 rsbac-policy-tgpro
- Senec Inverters Home V1, V2, V3 Home & Hybrid Use of Hard-coded Credentials - CVE-2023-39169 November 27, 2023Posted by Phos4Me via Fulldisclosure on Nov 27Sent through the Full Disclosure mailing list https://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: https://seclists.org/fulldisclosure/
- [SYSS-2023-019] SmartNode SN200 - Unauthenticated OS Command Injection November 27, 2023Posted by Maurizio Ruchay via Fulldisclosure on Nov 27Advisory ID: SYSS-2023-019 Product: SmartNode SN200 Analog Telephone Adapter (ATA) & VoIP Gateway Manufacturer: Patton LLC Affected Version(s):
- CVE-2023-46307 November 27, 2023Posted by Kevin on Nov 27running on the remote port specified during setup
- CVE-2023-46307 November 27, 2023Posted by Kevin on Nov 27While conducting a penetration test for a client, they were running an application called etc-browser which is a public GitHub project with a Docker container. While fuzzing the web server spun up with etcd-browser (which can run on any arbitrary port), the application had a Directory Traversal vulnerability that is […]
- Survey on usage of security advisories November 27, 2023Posted by Aurich, Janik on Nov 27Dear list members, we are looking for voluntary participants for our survey, which was developed in the context of a master thesis at the University of Erlangen-Nuremberg. The goal of the survey is to determine potential difficulties that may occur when dealing with security advisories. The focus of the […]
- [CVE-2023-46386, CVE-2023-46387, CVE-2023-46388, CVE-2023-46389] Multiple vulnerabilities in Loytec products (3) November 27, 2023Posted by Chizuru Toyama on Nov 27[+] CVE : CVE-2023-46386, CVE-2023-46387, CVE-2023-46388, CVE-2023-46389 [+] Title : Multiple vulnerabilities in Loytec L-INX Automation Servers [+] Vendor : LOYTEC electronics GmbH [+] Affected Product(s) : LINX-151, Firmware 7.2.4, LINX-212, firmware 6.2.4 [+] Affected Components : L-INX Automation Servers [+] Discovery Date :...
- [CVE-2023-46383, CVE-2023-46384, CVE-2023-46385] Multiple vulnerabilities in Loytec products (2) November 27, 2023Posted by Chizuru Toyama on Nov 27[+] CVE : CVE-2023-46383, CVE-2023-46384, CVE-2023-46385 [+] Title : Multiple vulnerabilities in Loytec LINX Configurator [+] Vendor : LOYTEC electronics GmbH [+] Affected Product(s) : LINX Configurator 7.4.10 [+] Affected Components : LINX Configurator [+] Discovery Date : 01-Sep-2021 [+] Publication date : 03-Nov-2023 [+]...
- Senec Inverters Home V1, V2, V3 Home & Hybrid Exposure of the Username to an Unauthorized Actor - CVE-2023-39168 November 12, 2023Posted by Phos4Me via Fulldisclosure on Nov 12Sent through the Full Disclosure mailing list https://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: https://seclists.org/fulldisclosure/
Estimated reading time: 6 minutes L'impatto crescente delle minacce informatiche, su sistemi operativi privati op… https://t.co/FimxTS4o9G
Estimated reading time: 6 minutes The growing impact of cyber threats, on private or corporate operating systems… https://t.co/y6G6RYA9n1
Tempo di lettura stimato: 6 minuti Today we are talking about the CTI update of our services. Data security is… https://t.co/YAZkn7iFqa
Estimated reading time: 6 minutes Il tema della sicurezza delle informazioni è di grande attualità in questo peri… https://t.co/tfve5Kzr09
Estimated reading time: 6 minutes The issue of information security is very topical in this historical period ch… https://t.co/TP8gvdRcrF